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Faq #517
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Faq #517
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Feb 8, 2017
docs/faq.md
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| Furthermore, we have optimizations for this use case: | ||
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| * Index filtering: when you request data, we exclude items from the result set that have not been updated in 24hours before the "from" of the request (as the data will be all null anyway) | ||
| * Index pruning: if enabled, we delete series from the index if no data has been received in "max-stale". (but keep data until it expires, in case the same metric gets re-added). This is useful beecause the query editor does not send a time range. Note that this setting is applied to *all* metrics. |
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beecause double e.
also: I'd say "max-stale" time just because it sounds a little more intuitive
replay
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Feb 8, 2017
docs/faq.md
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| * Index filtering: when you request data, we exclude items from the result set that have not been updated in 24hours before the "from" of the request (as the data will be all null anyway) | ||
| * Index pruning: if enabled, we delete series from the index if no data has been received in "max-stale". (but keep data until it expires, in case the same metric gets re-added). This is useful beecause the query editor does not send a time range. Note that this setting is applied to *all* metrics. | ||
| * GC: removes metrics from metrictanks' ringbuffer if they become stale (see `metric-max-stale`), which means data will most likely come from cassandra or possibly in memory chunk-cache, but does not affect the index. |
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not completely sure, but shouldn't it be metrictank's instead of metrictanks'?
or possibly the in memory chunk-cache i think there's a the missing
replay
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Feb 8, 2017
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| Metrictank aims to provide a proper implementation of [metrics 2.0](http://metrics20.org/) | ||
| (it helps that both projects share the same main author) | ||
| As such, metrics can have tags and they are indexed as such. However we don't expose this yet through the search or query interface, |
woodsaj
reviewed
Feb 24, 2017
metrictank-sample.ini
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| @@ -14,14 +14,14 @@ accounting-period = 5min | |||
| # see https://github.com/raintank/metrictank/blob/master/docs/data-knobs.md for more details | |||
| # duration of raw chunks. e.g. 10min, 30min, 1h, 90min... | |||
| chunkspan = 2h | |||
| # number of raw chunks to keep in memory. should be at least 1 more than what's needed to satisfy aggregation rules | |||
| # number of raw chunks to keep in memory ringbuffer. should be at least 1 more than what's needed to satisfy aggregation rules | |||
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numchunks has nothing to do with aggregation rules
woodsaj
approved these changes
Feb 24, 2017
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